class Job:
    def __init__(self, name, arrival_time, service_time):
        self.id = name
        self.arrival_time = arrival_time
        self.burst_time = service_time
        self.remaining_time = service_time
        self.start_time = None
        self.finish_time = None
        self.turnaround_time = None
        self.weighted_turnaround_time = None
